UBUNTU-CVE-2026-97209

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-97209
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97209.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-97209
Upstream
Published
2026-10-30T00:00:00Z
Modified
2026-10-31T03:30:15Z
Severity
  • 5.4 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Insecure Temporary File vulnerability in Mix deps.partition in Elixir allows a local user to execute code as another user via a swapped partition config file. Partitioned dependency compilation passes the project configuration to each partition VM through a file in a fixed-name directory under the shared system temporary directory, and the partition trusts what it reads back. Another local user on the same host can exploit this during a mix deps.compile run that uses partitioned compilation. Mix.Tasks.Deps.Partition.server/4 in lib/mix/lib/mix/tasks/deps.partition.ex creates the directory with File.mkdir_p/1, which accepts an existing directory without checking its owner, so a user who created it first can replace the file before client/0 reads it. This issue affects mix: from 1.20.0-rc.4 before 1.20.5.

References

Affected packages

Ubuntu:14.04:LTS / elixir

Package

Name
elixir
Purl
pkg:deb/ubuntu/elixir?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.7.1-1
0.7.1-2
0.7.1-4build0.14.04.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-elixir",
            "binary_version":  "0.7.1-4build0.14.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97209.json"

Ubuntu:16.04:LTS / elixir

Package

Name
elixir
Purl
pkg:deb/ubuntu/elixir?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.7.1-3
0.7.1-4build0.16.04.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-elixir",
            "binary_version":  "0.7.1-4build0.16.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97209.json"

Ubuntu:18.04:LTS / elixir

Package

Name
elixir
Purl
pkg:deb/ubuntu/elixir?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.7.1-4build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python-elixir",
            "binary_version":  "0.7.1-4build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-97209.json"